(Image from: https://hudsonvalleyseed.com/products/greek-oregano?_pos=1&_sid=ab71c2962&_ss=r)
Growing Instructions for Greek Oregano:
Surface sow or sow at a very shallow depth (less than ⅛"), either indoors early or outdoors a 3-4 weeks before last frost. Seedlings are tiny: keep well cultivated. Tolerates rocky, low-fertility soil; grows readily in nearly all situations. Once established, very little care is required.
(from Hudson Valley Seed Company website)